[web] render DBOpsHandler in TunnelbrokerProvider

Summary: We need to use Tunnelbroker to confirm message after successfully processing ops

Test Plan: Being able to call useTunnelbroker in DBOpsHandler and ops working properly on web

Reviewers: tomek, bartek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D11739